Function

Button Description

Button color

Start/On

Start/on actuators should be White, Grey,Black and Green

Emergency stop

Color red and a combination of red button with yellow background only for emergency stop

Stop/Off

Stop/off actuators should be black, gray or white. Do not use green

Start/On
Stop/Off

White, gray or black are colors for start/on and stop/off. Do not use red, yellow,green

Hold-to-run

White, gray or black are for actuation buttons (actuation= in operation, release=operation off)

Reset

Reset actuators must be blue, white, gray or black. Do not use green

Abnormal conditions

Yellow is to be used for abnormal conditions (e.g. automatic cycle interruption).

Function

Description of the machines indicator lamps

Colors machines indicator lamps

Operating requirement

Red, yellow, blue and green should be used to attract the attention of operators.

Confirm command

Blue and white are normally used to confirm a command.

Engravings for pushbutton actuators

When using the same color for different functions, an additional coding method (engraving/symbol) should be used.

Request

Automatic restart

Ready for operation

Lock

Unlock

Start

On

Off

Down

Up

Left

Right

Reset

Stop

Push button (change on or off)

Caution